Theodore Roosevelt Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Theodore Roosevelt Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Theodore Roosevelt Lake today is 28.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature is above 82°F (28°C). This is very warm water, which may feel almost hot to most people. Swimming in such conditions is perfect for those seeking relaxation and comfort in the water. These waters are often preferred for relaxation in hot weather, as the water temperature does not cool the body significantly. However, it is important to remember that in such warm waters, caution is necessary, as prolonged exposure without rest can lead to overheating. It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| AUG 30 | 31.7°C | 29.8°C | |
| AUG 31 | 31.7°C | 29.8°C | |
| SEP 1 | 31.5°C | 27.9°C | |
| SEP 2 | 31.5°C | 27.9°C | |
| SEP 3 | 28.4°C | 27.9°C | |
| SEP 4 | 28.3°C | 27.9°C | |
| SEP 5 | 28.4°C | 27.9°C | |
| SEP 6 | 28.2°C | 27.9°C | |
| SEP 7 | 27.9°C | 28.1°C | |
| SEP 8 | 27.9°C | 28.1°C | |
| SEP 9 | 27.9°C | 28.1°C | |
| SEP 10 | 27.9°C | 28.1°C | |
| SEP 11 | 27.9°C | 28.1°C | |
| SEP 12 | 27.9°C | 28.0°C | |
| SEP 13 | 27.9°C | 28.0°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 6°C | 10°C | 15°C |
| February | 9°C | 12°C | 16°C |
| March | 12°C | 17°C | 22°C |
| April | 12°C | 18°C | 24°C |
| May | 19°C | 23°C | 28°C |
| June | 22°C | 26°C | 30°C |
| July | 24°C | 29°C | 35°C |
| August | 26°C | 30°C | 34°C |
| September | 25°C | 28°C | 31°C |
| October | 19°C | 23°C | 26°C |
| November | 15°C | 20°C | 23°C |
| December | 13°C | 12°C | 18°C |
Theodore Roosevelt Lake: Water Temperature by Location
Theodore Roosevelt Lake: Weather Forecast
September 7
September 8
September 9
September 10
September 11
September 12
Location & Local Information
Theodore Roosevelt Lake, commonly known as Roosevelt Lake, is the largest of the Salt River Project reservoirs in Arizona, located within the Tonto National Forest. Its immense size and desert location contribute to significant water temperature changes. During the scorching summer months, the surface water is usually very warm and ideal for swimming, often reaching highs in the range of 28∘C to 31∘C (82∘F to 88∘F). Conversely, the winter brings considerable cooling, with surface temperatures typically dropping into the range of 11∘C to 14∘C (52∘F to 57∘F), which is too cold for casual recreational swimming.
Swimming is generally permitted and popular across Roosevelt Lake, as it is managed by the U.S. Forest Service for open water recreation. There are no official, lifeguarded beaches, meaning all swimming is done at your own risk. Swimmers are advised to be particularly cautious of two main hazards: the lake's heavy boat traffic, which is present throughout the year, and the frequent fluctuations in water level due to the reservoir's primary function of water storage and flood control. These fluctuations can expose submerged hazards like stumps and debris, especially in shallow coves or near the original river channel.